Halite oolites (halolites) and pisoids (halopisoids) precipitate yearly (in summer) in the brine conduits of the saltpans in the Tuz
Göl
xfc; saline lake (Central Anatolia, Turkey). These halolites are well rounded and spherical, ran
gin
g between 0.7 and 2 cm in size. They are composed of coarse-
grained halite crystals as the nucleus, and by concentric halite laminae with a radial fabric as the cortex. The cortex is subdivided into inner, middle, and outer zones, each zone showin
g different mineralo
gical and morpholo
gical features. These features include the presence of: or
ganic matter particles, native sulphur
globules,
gypsum–anhydrite–calcite laminae, quartz–chlorite–celestite–thermonatrite laminae, submicroscopic halite crystals, and microborin
gs, cavities and corrosion-like structures.
Our observations in the Tuz Gölxfc; saltpan environment and in the halolite fabrics suggest that (1) an intermittent supply of heavy brines from the saline lake into the saltpan conduits, which occur under agitated conditions during pumping operations, is the main genetic reason for the halolite formation; and that (2) physical, chemical and biological factors exert a significant influence on the mineralogical–textural complexity of the cortex.